8 Reasons Why Cat Poop Smells So Bad and How to Get Rid of the Smell (Updated 2026)
Last updated: October 22, 2026. Disclosure: As an Amazon Associate I earn from qualifying purchases. Some links below are affiliate links, which means this site may earn a small commission at no extra cost to you. Prices and availability change, so check the current listing before you buy. Key takeaways Cat poop always has an odor, but it should not stink up the whole house. A sudden change in smell is worth noticing. Common causes are diet, food sensitivity, parasites, gut inflammation, stress, medications and a dirty litter box. Call your vet right away for blood, black or tarry stool, liquid stool or if your cat seems unwell or lethargic. A metallic smell can mean blood. For the odor in the house, daily scooping, a clean box and the right litter make a big difference. Cat owners know the moment: you walk into the room and the litter box announces itself. A little smell is normal, since cats are carnivores and their waste is high in protein. But if the odor is overwhelming, or has su...